Yorkshire's Ajmal Shahzad has fallen out of favour for England and now faces a possible ECB charge after an alleged incident while batting against Warwickshire in the County Championship. Photograph: Gareth Copley/PA

Ajmal Shahzad, the Yorkshire and England fast bowler, faces the possibility of disciplinary action after being caught on film allegedly scuffing up the pitch.

The England and Wales Cricket Board is studying footage of the incident, which took place on Saturday morning, during the first session of the final day of the County Championship Division One match between Warwickshire and Yorkshire at Edgbaston.

Shahzad was batting and, at the fall of Adil Rashid's wicket towards the end of the Yorkshire innings, he is alleged to have used his boot to scuff the pitch before Warwickshire's second innings.

It is understood that neither of the umpires, Peter Hartley and Jeff Evans, distracted by the fall of the wicket, saw what happened but evidence was captured by Crickstat, the ECB-approved technology that is used at every ground to assist with coaching and analysis.

The Yorkshire coach, Martyn Moxon, said: "I was made of aware of the incident on the day and told that the umpires would be making a report. I didn't see the incident. All we can do now is await the outcome."

Shahzad, 26, has played in one Test and 11 one-day internationals. His last appearances for England came in the World Cup in India that followed the Ashes tour of Australia.

He played against India in Bangalore and Bangladesh in Chittagong before returning home early with hamstring problems. Since then he has had a difficult season with Yorkshire. In nine matches, before the current game at home to Somerset, he had taken 22 wickets at an average of 42.22.

He has fallen behind other fast bowlers in the England rankings. Jade Dernbach, who replaced him during the World Cup, has since moved ahead of him in the one-day international squad and is playing against India in the series that continues on Friday.